Can I open up 2+ projects on Windows Movie Maker at the same time?

I finished my movie on WMM and need to save/publish the movie in one piece. As in, I made the movie in two parts; part 1 & 2. And I want to open both projects at the same time. I had part 1 in the timeline, and I tried to open part 2, but it replaced part 1. I want them to be together. Help??